[Ubuntu] debconf-set-selections usage example

debconf-show --listowners

mysql-server
openssh-server
wireshark-common

debconf-show wireshark-common

  wireshark-common/group-is-user-group:
  wireshark-common/addgroup-failed:
  wireshark-common/setcap-failed:
  wireshark-common/group-removal-failed:
* wireshark-common/install-setuid: true

Set and store into debconf

debconf-set-selections <<< 'wireshark-common wireshark-common/install-setuid boolean true'